Features: 1. The batteries are adopted class A battery slice, each product is tested by strict EL and IV component and the conversion rate can be up to more than 20%.2. Anodic oxidation aluminum alloy is tested by salt spray and nitriding to ensure that the component life can be up to more than 25 years.3. The products are made of ultra-clear tempered glass that the light transmission rate can be up to 93%, and it is effective against hail, which can take 5400 PA the impact of snow.4. The batteries are adopted battery slice imported from German, each battery is tested strict sorting test to make sure that the battery slices have a good electrical property.